File extensions do not show when saving the from File>Save As... in Photoshop

For some reason, when I use "Save As" to create alternate versions of an image (.jpeg vs. .TIFF), it sometimes doesn't save, at all. Other times, the file appears as a white document icon in the folder with no file extension. The original name of the image is also usually reduced. For example, I had a jpeg named "capt. johnson.jpeg," and when I tried to save a TIFF version, it was changed to "capt" but didn't have a file extension.

Sorry this is happening, could you please let us know the version of Photoshop installed on your computer.Also, which OS are you working on, Windows or mac?Were you able to save the file as .Jpeg when going through File>Save?I would also suggest to reset Photoshop preferences once: https://helpx.adobe.com/photoshop/using/preferences.html

Examples so far:We have a crappy CMS for our website at work, so we have resize images specifically to 770x400 pixels for the web. So if I have a jpeg image named "image.jpeg," for example, I'll resize it appropriately, then save it as "image web.jpeg." Sometimes it does the blank icon thing with no file extension if I save it in the same folder. If I immediately save it in a different folder, there's no issue.

Same thing happens sometimes when I save the hypothetical "image.jpeg" as "image.TIFF" in the same folder. It's confusing, for sure, but doesn't happen all the time.